Table 2

Summary of preoperative characteristics among children with bilateral and unilateral cataract, by implantation status

	Bilateral (n children=131)			Unilateral (n=90)
	IoL n=56	Aphake n=75	Total	IoL n=48	Aphake n=42	Total
Age at diagnosis (weeks)
Median	3	0.1	1	6	0.3	3.4
IQR	0.1–57	0.1–16	0.1–61	0.1–49	0.1–9	0.1–57
Range	0–79	0–74	0–79	0–79	0–66	0–79
Missing data	n=0	n=0	n=0	n=0	n=0	n=0
Age at surgery (weeks)
Median	13	7	9	35	7	9
IQR	7–97	6–29	6–97	7–94	5–59	5–94
Range	4–103	2–72	2–103	3–103	4–84	3–103
Missing data	n=0	n=0	n=0	n=0	n=0	n=0
Axial length (mm)
Median	19.3	17.7	17.6	18.7	17.9	18.3
Range	15–20.8	15.6–24	15–24	15.6–24	15–20.8	15–24
Missing data	n=0	n=15	n=15	n=0	n=8	n=8
Horizontal corneal diameter in mm
Median	11	9.75	10	10.75	10	10.5
Range	9–12	7–12	7–12	9–12.5	8–11.75	8–12.5
Missing data	n=8	n=7	n=15	n=6	n=8	n=14
Cataract asymmetry	14 children, 25%	12 children, 16%	26 children, 20%	-	-	-
Missing data	n=0	n=0	n=0
Microphthalmos
Microphthalmos	37 children, 66%	46 children, 61%	83 children, 63%	25 children, 52%	25 children, 60%	50 children, 60%
Significant microphthalmos	2, 4%	20, 27%	22, 18%	1, 2%	6, 14%	7, 8%
Missing data	n=0	n=0	n=0	n=0	n=0	n=0
Persistent fetal vasculature	4 children, 7%	7 children, 9%	11 children, 8%	14 children, 30%	28 children, 67%	42 children, 47%
Missing data	n=0	n=0	n=0	n=0	n=0	n=0
Medical disorder/other impairment	13 children, 23%	22, 29%	35, 27%	6, 13%	1, 2%	7, 8%
Missing data	n=0	n=0	n=0	n=0	n=0	n=0